A question about toroids.....

Brett

Member
2002-01-07 6:02 pm
Go to <a href="http://www.duncanamps.com">Duncan Amps</a> and download the free PSUD program. It's quite simple and intuitive to use, and you can model you power supplies to a much greater degree of accuracy. I've found it quite close to what I eventually built. Tip: I find it easier usually to use the load as a current source rather than a resistor, especially for class A circuits. It's a right click option.

To answer your original question, yes 1.4142 is the theretical ratio, and will vary depending on the real properties of the components used, hence my suggestion for PSUD.

HTH
 

Nelson Pass

The one and only
Paid Member
2001-03-29 12:38 am
The 1.2 figure is an approximation which "accounts" for
various losses including diode drop, ripple voltage, and
the loading down of the transformer and the primary
power source.

The 1.4 figure is highly idealized and assumes "perfect"
components.

1.2 times AC voltage is a good working number if you
don't want to perform a lot of analysis.